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Green rectangular DDR5 memory module with gold contacts and black chips, no heat spreader

OWC

OWC 5R6D52R464GB 64GB DDR5 5600 CL46 2Rx4 1.1V ECC RDIMM

SKU CH-61X1-XTHNC

64GB DDR5 5600 ECC RDIMM module for Supermicro SuperServer SYS-111E and SYS-121C systems

  • Total capacity64 GB
  • Rated speedDDR5 5600 (PC5 44800)
  • CAS latency46
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 64GB

  • ECC registered design protects data integrity in servers
  • 64GB single module expands memory capacity efficiently
  • DDR5 5600 speed delivers high bandwidth for workloads
  • 1V operation reduces power draw per module
  • Validated for Supermicro SuperServer SYS-111E and SYS-121C systems

Targeted Server Upgrade

This 64GB DDR5 module is built for Supermicro SuperServer platforms including the SYS-111E and SYS-121C families. It delivers ECC registered performance for workloads that demand data integrity and sustained throughput. The single DIMM format suits administrators expanding memory capacity in compatible 1U and 2U rackmount systems.

Registered DIMM Build

The module uses a 288-pin RDIMM form factor with a 2Rx4 organisation and operates at 1.1V. Registered buffering reduces electrical load on the server memory controller, allowing larger total capacities per channel. No heat spreader is fitted, so airflow across the PCB must be provided by the chassis fans. The JEDEC-standard PC5-44800 rating ensures compliance with industry specifications.

Compatibility Check

Verify that your SuperServer model appears in the supported list before ordering. This memory will not function in standard desktop motherboards or consumer workstations. It also cannot be mixed with unbuffered or load-reduced DIMMs in the same system. Confirm available DIMM slots and maximum per-slot capacity using the server technical documentation.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $1,618.99
Pricier than about 65% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB
Higher than about 60% of the 20,941 comparable items (median 32 GB).
CAS latency 46
Higher than about 90% of the 483 comparable items (median 22).
Price per GB $25.30 per GB
Pricier than about 70% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number5R6D52R464 GB
Total capacity64 GB
Product type288-Pin DDR5 ECC RDIMM
Performance
Rated speedDDR5 5600 (PC5 44800)
Memory
CAS latency46
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro SuperServer SYS-111E-FDWTR-OS1
Supermicro SuperServer SYS-111E-FWTR
Supermicro SuperServer SYS-111E-FWTR-OS1
Supermicro SuperServer SYS-111E-WR
Supermicro SuperServer SYS-121C-TN10R

Other versions of this model

5 more in the same range

Questions about this item

Does the PC5-44800 DDR5 5600 interface run at full speed on Supermicro SuperServer SYS-111E-FDWTR-OS1?

The module is rated DDR5 5600 PC5-44800 CL46; actual operating speed depends on the server's memory controller and populated slots.

What physical slot and clearance does the 288-pin RDIMM need?

It fits a standard 288-pin DDR5 RDIMM socket; no heat spreader means low-profile clearance is sufficient.

What installation step do people miss when adding this registered ECC module?

Registered ECC RDIMMs must not be mixed with unbuffered or load-reduced DIMMs; populate identical modules per channel for correct operation.

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